Swedish units of measurement

Traditional Swedish units of measurement were standardized by law in 1665, prior to which they only existed as a number of related but differing local variants. The system was slightly revised in 1735. In 1855, a decimal reform was instituted that defined a new Swedish inch as $1/10$ Swedish foot (2.96 cm). Up to the middle of the 19th century, there was a law allowing the imposition of the death penalty for falsifying weights or measures. After a decision by the parliament in 1875, Sweden adopted the metric system on 22 November 1878, with a ten-year transition period until 1 January 1889.

As part of the transition, the Swedish mil measurement was maintained, but was shortened from $18,000$ alnar – the equivalent of 10.69 km – to exactly 10 km. This measurement is still in use in both Sweden and Norway (which were in a union at the time).

Old length units
The Swedish units of length included the following:
 * aln – "forearm" (cf. ell) (pl. alnar). After 1863, 59.37 cm. Before that, from 1605, 59.38 cm as defined by King Carl IX of Sweden in Norrköping 1604, based on Rydaholmsalnen.
 * famn – "fathom", 3 alnar.
 * fot – "foot", $1/2$ aln. Before 1863, the Stockholm fot was the commonly accepted unit, at 29.69 cm.
 * kvarter – "quarter", $1/4$ aln.
 * tum or verktum – "inch", $1/6$ kvarter or $1/12$ fot, making it 2.47 cm.
 * linje – "line", after 1863 $1/10$ tum, 2.96 mm. Before that, $1/12$ tum or 2.06 mm.
 * mil – "mile", also lantmil. From 1699, defined as a unity mile of $18,000$ alnar or 10.69 km. The unified mile was meant to define the suitable distance between inns. After the 1889 metric conversion the Swedish mil is defined as exactly 10 kilometers.
 * nymil – "new mile" from 1889, 10 km exactly. Commonly used to this day, only referred to as mil.
 * kyndemil – the distance a torch will last, approx 16 km.
 * skogsmil, rast – distance between rests in the woods, approx. 5 km.
 * fjärdingsväg – $1/4$ mil.
 * stenkast – "stone's throw", about 50 m, used to this day as an approximate measure.
 * rev – 160 fot, for land measurement, was 100 fot after 1855.
 * stång – 16 fot, for land measurement.
 * tum – "thumb" (inch), $1/12$ fot, 2.474 cm. After 1863 $1/10$ fot, 2.96 cm, not much accepted by professional users in mechanics and carpentry who later switched to English inch (2.54 cm, abandoned only late 20th century) and metric system.
 * tvärhand – "hand", 4 in.

Old area units

 * kannaland – 1000 fot2, or 88.15 m2
 * kappland – 154.3 m2.
 * spannland – 16 kappland
 * tunnland – 2 spannland or 4,937.6 m2, about 1 acre
 * kvadratmil – Square mil, 36 million square favnar, from 1739.
 * hektar - 100x100m, still commonly used for land area of farms.

Old weight units

 * mark – 1/2 skålpund. Was used from the Viking era, when it was approx. 203 g.

Old monetary units

 * daler – From 1534, Swedish thaler. From 1873, replaced by the krona.
 * riksdaler – From 1624, $1 1/2$ daler, from 1681 2 daler, from 1715 3 daler, from 1776 6 daler
 * skilling – From 1776, $1/48$ riksdaler
 * mark – From 1534, $1/3$ daler. From 1604, $1/4$ daler.
 * öre – From 1534, $1/8$ mark. Subsequently replaced by the skilling, but from 1855 reintroduced as $1/100$ riksdaler.